Heat-exchange apparatus



w M, 119%. K. MUHLEISEN HEAT EXCHANGE APPARATUS Filed Dec. 4, I922ATTORNEY.

Patented Uct. Ml, WEA.

JKAJRJL MUJBELEISEN, 01E PHILADELPHIA, PENNSYLVANIA, ASSIGNOR T SOHUTTEAND vJKOJEXR'IIFIING COMPANY, OF PHILADELPIEUIA, PENNSYLVANIA, ACORPORATION OF PENNSYLVANIA;

Application filed December 4., 1922.

To. all whom it may concern."

Be itknown that I, KARL MUHLEISEN, a citizen of the United States, and aresident of Philadelphia, in the county of Philat delphia and State ofPennsylvania, have invented an Improvement in Heat-Exchange Apparatus,of which the following is a specification.

- My invention relates broadly to heat exchange apparatus and moreparticularly to the means for connecting or securing a header to thetube-plate or sheet, the edge of which forms an expansion joint with theadjacent portion of the casing of such appara- .tus.

Une object of the invention is to provide- ..A further object is toprovide an improvedconstruction of means for retaining packing inposition around a tube-plate or sheet and a flange projecting outwardlytherefrom for the purpose of sealing the joint between such sheet andthe exterior casing. of the apparatus.

To these and other ends my invention comprehends the construction andarrangement of parts as hereinafter fully described particularly pointedout in the claims an as illustrated in the drawing forming a part ofthis specificatiom It is to be understood however, that my invention issusceptible of embodiment in other forms of construction than that shownand that changes in the details thereof maybe made within the scope ofthe claims without departing from the same.

In the drawings:

Fig. 1 is a central longitudinal sectional view of a portion of a heatexchange apparatus provided with my'invention; and

Fig. 2 is a transverse sectional view taken on the line 2-2 of Fig. 1. I

Referring to the drawing: 1' designates a casing from which extends atubular projection 2 which has a flange 3 to which the HEAT-EXCHANGEAPPARATUS. I

Serial no. ceases. I

end of a conduit (not shown) is adapted to be secured. The oil or otherfluid to be cooled enters the casing by way of the openlng through thetubular projection 2 and escapes from a'corresponding outlet opening (inknown manner) adjacent the opposite end of the casing.

Situated within the casing 1 .are pipes or tubes 5 to which are securedbaflie-plates 6 arranged as shown which operate to cause the 011 orother fluid which may enter through the tubular projection 2 to flow ina zigzagv direction through the casing 1 and about the pipes 5. The endsof the pipes or tubes 5 are secured within openings in a tubelate orsheet 8 in any known manner, whic plate or sheet is adapted. to movewithin the casing 1 due to the expansion and contraction of said pipes.It will be understood that the opposite ends of these pipes or tubes arealso secured in atube-plate or sheet secured or fastened to-the oppositeend of the casing 1 in any desired known manner.

The tube-plate or sheet 8 is provided. with a forwardly extending flange9 the forward edge of which is provided with an inwardly extendingnarrow flange 10. The tube-plate is situated withinthe end of the casing1 and fits the same closely as indicated at 12. The end portionof thecasing 1 which extends beyond the tube-plate 8- is provided upon theinnerside with a recess 15 which extends entirel' around the same, whichrecess surroun s the outer portion of the edge of the tube-plate 8 andalso surrounds the flange 9 previously referred to. Packing material 16is situated within the said recess around theedge portion of thetubeplate 12 and also around aportion of the flange 9. For the purposeof compressing the packing material 16 tightly within the recess .15 soas to hold it closely a ainst a with a flange 19 which extends outwardlyfrom the adjacent end ofthe casing 1. The

' flange 19 is provided with screw-threaded openings 20 at intervalstherein in which screw-threaded bolts 21 are secured. The

outer ends of these, bolts project through openin 22 in the flange 18.For the purpose o forcing the gland inwardly against the packing 16 nuts.23 are screwed on to the outer ends of the screw-threaded bolts 21againstthe flange 18 to thereby force the gland 17 inwardly a ainst thepacking 16.

For the purpose securing the header -25 to the forward edge portion ofthe flange 9 I have provided the inner end portion of around the same.

the said, header with a flange 26, the outer inner edge portion of whichis provided with a recess 27 which extends entirely 1 The forward edgeof the flan e 9 projects into the said recess and a was ier-like ring 30of suitable material is interposed between the edge of said flange andthe bottom of the recess 27 for the purpose of effecting a water andsteam ti ht oint between the flanges 9 and 26. The 1nner edge of thewasher-like ring member is seated against a shoulder at the inner edgeof the recess 27 and the edge portion of said shoulder contac'ts'withthe inner edge of the inwardly extending flange 10.

The flange '26 is provided at intervals with countersunk holes 31 whichextend V therethrough through which screw-threadedbolts 32 exteiid. Theinner sides of the heads of these bolts are tapered, as indi cated at33, so as to form a tight fit within the countersunk portions of theopenings 31. The inner ends of the screw-threaded bolts 32 are inscrew-threaded engagement with screw-threaded holes 33 through aclamping member divided into three sections 34 which sections, whenplaced in end to end position as shown in Fig. 2 of the drawmgscorrespond to the shape of the flange 9. In the construction as'shown eouter edges of these members 34 are situated underneath the inwardlyextended flange 10 and the said members are each provided with aforwardly extending flange 35 the forward edge of which is adapted tocontact with the inner end of the header 25. By

screwing the inner ends of the bolts 32 into the screw-threaded openings33 through the members 34 the said members and the flange 26 may becaused to clamp tightly against the opposite sides'of the flange 10. Byunscrewing and removing the screw-threaded bolts 32 the header may bereadily disconnected from the flange 9, .as is clearly aparent. Thishaving been done it also will e apparent that the sections 34 previouslyreferred to may then be removed.

The water or other cooling medium enters the apparatus through a header(not shown) at the opposite end of the casing 1 and flows through thepipes or tubes 5 and escapes from the header 25 through an outlet port ropening at 37, all in known manner.

It will'be seen that by inyjinvention I have provided a simple and.eflicient novel said gland into the said construction of means whereby aheader may be readily detachablysecured to the expansion tube-plate orsheet of a heat exchange apparatus and have also provided novel meanswhereby the joint between the latter and the casing may be moreeffectively sealed than heretofore has been the case by reason of thefact that the gland 17 may be tightened at will and as desired to effecta tightening and clamping action of the packing material 16 within therecess 15 surrounding the outer edge of the tubeplate or sheet 8 and theflange projecting forward therefrom.

It will also be seen that by my invention I have provided means wherebyin case of a leak through the packing around the tubesheet or betweenthe edge of the flange 9 'and the header the'leaking liquid will flow istaking place so that such joint ma be tightened independently of theother oint and Without interrupting the service of the apparatus. Itwill also be noted that by means of the arrangement embodying myinvention it is impossible for one of the liquids to leak through ajoint and mix with theother liquid.

Having thus described my invention what I claim and desire to secure byLetters Patent is:

1. In heat exchange apparatus, the combination of a tube-plate having aforwardly extending flangewhich terminates at its forward edge in aninwardly extending flange, a header having a flange, the outer edgeportion of which is adapted to contact with the forward edge of thefirst named flange, a clamping member comprising a plurality of sectionsthe outer edges of which are situ ated underneath the said inwardlyextending flange, and means for clamping the latter flange between thesaid clamping member :and the flange on said header.

2. In heat exchange apparatus, the combination of a casing, a pluralityof heat exchange tubes situated therein, a tube-plate secured to one endof each of said tubes, the said tube-plate being situated within thesaidcasing adjacent an end thereof, which plate is provided with aforwardly extendmg flange and the said casing having an end portionwhich projects beyond the said tubeplate which end portion isprovidedwith a recess upon the inner side surrounding a portion of theedge of said tube-plate and a portion of the said flange, packingmaterial within the said recess, a gland surrounding the first namedflange and projecting into the said recess, means for forcing therecess, a header, and means for securing the same to the said flange.

matinee 3. In heat exchange apparatus, the combination of a casing, atube-plate situated within said casing adjacent one end thereof,

which plate i provided with a forwardly extending flange, a header,means for detachably connecting said header to said flange and means forhermetically sealing the joint between the said tube-plate and the saidcasing.

4. In heat exchange apparatus, the combination of a casing, a tube-platesituated within the said casing and having a flange extending forwardly,a portion of which flange is surrounded by an end portion of saidcasing, a header, means'for detachably connecting said header to saidflange, means for hermetically. sealing the joint between the said tubeplate and the said casing, and means for hermetically sealing the ointbetween the said header and the said flange.

5. In heat exchange apparatus, the combination of a tube-plate having aflange at its flange and which sections are provided with screw-threadedopenings at intervals which are adapted to be brought into alinementwith the openings through the header flan and bolts having heads theinner sides of which are tapered to fit the countersunk portions of thesaid,-openings, which bolts are ada ted to engage screw-threadedopenings wit in the aid clamping member to eflect clampin of the secondnamed flange between t e said sections of the clamping member and theheader flange.

6. In heat exchange apparatus, the combination of a casing, a bundle oftubes therein, a tubelate, the edge of which forms an expansion ointwith the adjacent portion-of said casing, which tubep1ate is secured tothe adjacent ends of the tubes of said bundle, a header secured to saidtube-plate, and means whereby leakage between the casing and header isprevented.

7. In heat exchange apparatus, the combination of a casing, a bundle oftubes therein,

a tube-plate, the edge of which forms an expansion joint with theadjacent portion of said casing and the said tube-plate being secured tothe adjacent ends of the tubes of said bundle, packin materialintermediate the'outer edge of sai tube-plate and the said casing, aheader secured to said tube-plate, packin means intermediate said headerand said tu e-plate, and means whereby the said packings may'betightened independently of each other and without interfering with theoperation of the said apparatus.

In testimony that I claim the foregoing as my invention, I have hereuntosigned my name this 21st day of November, A. D. 1922.

KARL MUHLEISEN.

